#!/bin/bash 
#
# setattr-flush-dirty: test flush dirty pages in setattr
# bug: https://bugzilla.kernel.org/show_bug.cgi?id=33372
#
# Author: Colin King <colin.king@canonical.com>
#
# Copyright (C) 2012 Canonical, Ltd.
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA

test_script_dir=$(dirname $0)
test_dir=""

. ${test_script_dir}/../lib/etl_funcs.sh

test_same_timestamp()
{
	ts1=`stat -c '%y' $1`
	ts2=`stat -c '%y' $2`

	if [ "$ts1" != "$ts2" ]; then
		rc=1
	fi
}

test_cleanup()
{
	etl_remove_test_dir $test_dir
	etl_umount
	etl_lumount
	etl_unlink_keys
	exit $rc
}
trap test_cleanup 0 1 2 3 15

etl_add_keys || exit
etl_lmount || exit
etl_mount_i || exit
test_dir=$(etl_create_test_dir) || exit

touch ${test_dir}/original
sync
sleep 1

rc=0
#
# Copy -p preserves the original timestamp, check this works
#
cp -p ${test_dir}/original ${test_dir}/copy
test_same_timestamp ${test_dir}/original ${test_dir}/copy

sync
#
# Check that setattr is flushing dirty pages - the copied file
# timestamp should not have changed after the sync
#
test_same_timestamp ${test_dir}/original ${test_dir}/copy

rm -f ${test_dir}/original ${test_dir}/copy

exit
